81988380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{455491}}^1$

素因数の和:455506

約数の個数: 36

約数和(自身を含む): 248698632

約数和(自身を除く): 166710252

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 455491, 910982, 1366473, 1821964, 2277455, 2732946, 4099419, 4554910, 5465892, 6832365, 8198838, 9109820, 13664730, 16397676, 20497095, 27329460, 40994190, 81988380]

約数ペア:

[(1, 81988380), (2, 40994190), (3, 27329460), (4, 20497095), (5, 16397676), (6, 13664730), (9, 9109820), (10, 8198838), (12, 6832365), (15, 5465892), (18, 4554910), (20, 4099419), (30, 2732946), (36, 2277455), (45, 1821964), (60, 1366473), (90, 910982), (180, 455491)]